/*
 *  Copyright 2004 Blandware (http://www.blandware.com)
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package com.blandware.atleap.webapp.action.core.contentLocale;

import com.blandware.atleap.common.Constants;
import com.blandware.atleap.common.util.QueryInfo;
import com.blandware.atleap.service.core.ContentLocaleManager;
import com.blandware.atleap.webapp.action.core.grid.BaseGridAction;
import com.blandware.atleap.webapp.taglib.core.grid.util.Grid;
import com.blandware.atleap.webapp.taglib.core.grid.util.SortField;
import com.blandware.atleap.webapp.util.core.LocaleUtil;
import com.blandware.atleap.webapp.util.core.WebappConstants;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;

/**
 * <p>Forward to the page with list of content locales
 * </p>
 * <p><a href="ListContentLocalesAction.java.html"><i>View Source</i></a></p>
 * <p/>
 *
 * @author Sergey Zubtsovskiy <a href="mailto:sergey.zubtsovskiy@blandware.com">&lt;sergey.zubtsovskiy@blandware.com&gt;</a>
 * @version $Revision: 1.13 $ $Date: 2007/12/13 13:52:57 $
 * @struts.action path="/core/contentLocale/list"
 * name="contentLocaleForm"
 * validate="false"
 * roles="core-contentLocale-list"
 * @struts.action-forward name="listContentLocales"
 * path=".core.contentLocale.list"
 */
public final class ListContentLocalesAction extends BaseGridAction {
	/**
	 * @param mapping  The ActionMapping used to select this instance
	 * @param form     The optional ActionForm bean for this request (if any)
	 * @param request  The HTTP request we are proceeding
	 * @param response The HTTP response we are creating
	 * @return an ActionForward instance describing where and how
	 *         control should be forwarded, or null if response
	 *         has already been completed
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
	                             HttpServletRequest request, HttpServletResponse response) {

		Grid clGrid = getGridByName(WebappConstants.CONTENT_LOCALES_GRID, request.getSession());

		if ( clGrid == null ) {
			clGrid = new Grid(WebappConstants.CONTENT_LOCALES_GRID);
		}

		// catch parameters related to sorting
		String sortFieldName = request.getParameter("sortField");
		String orderByClause = new String();
		if ( WebappConstants.CONTENT_LOCALES_GRID.equals(request.getParameter("gridName")) && sortFieldName != null && sortFieldName.length() > 0 ) {
			SortField sortField = clGrid.getSortFieldByFieldName(sortFieldName);
			if ( sortField == null ) {
				sortField = new SortField(sortFieldName, SortField.ORDER_DESCENDING);
				clGrid.addSortField(sortField);
			} else {
				sortField.reverseOrder();
				clGrid.addSortField(sortField);
			}
			orderByClause = clGrid.getOrderByClause();
			clGrid.getSortFieldByFieldName(sortFieldName).reverseOrder();
		}

		saveGrid(clGrid, request.getSession());

		QueryInfo queryInfo = new QueryInfo();
		queryInfo.setWhereClause(clGrid.getWhereClause());
		queryInfo.setOrderByClause(orderByClause);

		ContentLocaleManager contentLocaleManager = (ContentLocaleManager) getBean(Constants.CONTENT_LOCALE_MANAGER_BEAN);
		List contentLocales = contentLocaleManager.listContentLocales(queryInfo).asList();

		request.setAttribute(WebappConstants.CONTENT_LOCALES_COLLECTION_KEY, contentLocales);

		// save number of available locales
		request.setAttribute(WebappConstants.AVAILABLE_LOCALES_LIST_SIZE_KEY, new Integer(LocaleUtil.getInstance(servlet.getServletContext()).getAvailableLocales().size()));

		// save transaction token in request
		saveToken(request);
		return mapping.findForward("listContentLocales");
	}
}